RYA Diesel Engines

This course gives you an overall awareness of the main systems of a marine diesel engine. We teach you how to take simple measures to prevent mechanical breakdown at sea and to rectify defects which do not require workshop support.
5 December
Sun 05 Dec 2021
1 day, 10:00 AM - 05:00 PM
Sydney, Australia
  • $385.00 incl. GST
Register3 places remaining
6 February
Sun 06 Feb 2022
1 day, 10:00 AM - 05:00 PM
Sydney, Australia
  • $385.00 incl. GST
10 April
Sun 10 Apr 2022
1 day, 10:00 AM - 05:00 PM
Sydney, Australia
  • $385.00 incl. GST
5 June
Sun 05 Jun 2022
1 day, 10:00 AM - 05:00 PM
Sydney, Australia
  • $385.00 incl. GST

To book a private course Enquire here


Whether you sail a yacht with an auxiliary diesel engine or are a motor cruising enthusiast, this course will teach you enough to understand and take care or your engine.

At the end of the course you will be able to perform simple engine maintenance tasks, helping to extend the life and preserve the condition of your engine and save you money in the long run.

Although the Diesel Engine certificate is not compulsory, you need this level of knowledge to enter a Yachtmaster exam.

Course content  

Principles of the diesel engine

  • The four stroke cycle
  • Naturally aspirated engines
  • Turbo charging
  • Intercooling/aftercooling

The fuel system

  • The basic system and tank 
  • The water separating pre filter
  • Fuel lift pump
  • The engine fine filter
  • Injection pump and injectors 
  • Bleeding the system

The cooling system

  • Seawater cooling
  • Freshwater cooling
  • Temperature control / the thermostat
  • The seawater impeller pump

The air system

  • Air in
  • Air out

Engine electrical system

  • The basic system
  • Battery capacity and care
  • Drive belts
  • The alternator

Fault finding /routine maintenance /spares and tools

Instruction and location

The course is delivered to a small group in our waterside classroom by a qualified RYA Diesel Engine instructor

What's included

  • Tuition and course training pack.


  • RYA Diesel Engine certificate

Before you start

No previous experience is needed for this introductory course.

What next?

If you spend any time on yachts you will soon find yourself doing engine checks in real life. Practice makes perfect!

For a more comprehensive introduction to essential yacht maintenance join our Basic Yacht Maintenance course.